Regarding optional requestParams getting added to Body section during code generation

Created by: Uma19

Version of openapigenerator : v4.3.0 Issue description: In my openapi file if the entry of requestparams is like this /v1/request-type/list: post: tags: - request-type summary: Testing description: Testing operationId: addRequestTypeList requestBody: content: '/': schema: type: array items: $ref: '#/components/schemas/RequestType'

so the corresponding code that is getting gererated is like below export interface AddRequestTypeListRequest { requestType?: Array; } const response = await this.request({ path: /v1/request-type/list, method: 'POST', headers: headerParameters, query: queryParameters, body: requestParameters.requestType.map(RequestTypeToJSON), }); which gives error during compile time as (property) AddRequestTypeListRequest.requestType?: RequestType[] | undefined Object is possibly 'undefined'.

Ideally the body content should be created like this optional to resolve the above error body: requestParameters.requestType.?map(RequestTypeToJSON),

Also checked the github code for the same. Can we add this provision or is there any other way

https://github.com/OpenAPITools/openapi-generator/blob/v4.3.0/modules/openapi-generator/src/main/resources/typescript-fetch/apis.mustache line no 255 line no 21

Can you help me to resolve this issue